<?php
$i=1; 
foreach ($this->menu as $module):
    $current = '';
    if ($module->module == $this->current_module) {
        $current = 'current';
    }
    if ($i == 1):?>
        <li class="wp-first-item <?php echo $current?>"><?php echo $this->partial('admin/menu.phtml', $module->module, array('index'=>$i));?></li>
    <?php else : ?>
        <li class="<?php echo $current?>">
        <?php echo $this->partial('admin/menu.phtml', $module->module, array('index'=>$i));?></li>
    <?php endif;?>
    <?php $i++;?>
<?php endforeach;?>  